Technology · Microsoft
Microsoft MsQuic vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in Microsoft MsQuic: 0 in the last 7 days and 3 in the last 90 days, 3 of them critical and 0 exploited in the wild. The most recent, CVE-2026-105794, was published on 6 October 2026. 1 vulnerability in the last four weeks, level on the four before (1). 1 critical against 1.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 3
- Exploited in the wild
- 0
About Microsoft MsQuic
MsQuic is a Microsoft implementation of the QUIC network protocol for fast, reliable data transmission.
Latest Microsoft MsQuic vulnerabilities
- CVE-2026-105794: Microsoft MsQuic hostname validation bypasscriticalCVSS 4EPSS 1.0%
- CVE-2026-62815: Microsoft QUIC use-after-free in path migrationcriticalCVSS 9.8EPSS 1.0%
- Microsoft QUIC use-after-free remote code executioncriticalCVSS 9.8
Most severe Microsoft MsQuic vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-62815: Microsoft QUIC use-after-free in path migrationcriticalCVSS 9.8EPSS 1.0%
- Microsoft QUIC use-after-free remote code executioncriticalCVSS 9.8
- CVE-2026-105794: Microsoft MsQuic hostname validation bypasscriticalCVSS 4EPSS 1.0%
Vulnerabilities per week
1 vulnerability in the last four weeks, level on the four before (1). 1 critical against 1. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 1 | 1 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 1 | 1 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 1 | 1 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Microsoft MsQuic vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/msquic)<a href="https://junglewise.ai/threats/technologies/msquic"><img src="https://junglewise.ai/threats/technologies/msquic/badge.svg" alt="Microsoft MsQuic vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/msquic.json, and this page as text at https://junglewise.ai/threats/technologies/msquic.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft MsQuic vulnerabilities", https://junglewise.ai/threats/technologies/msquic, 19 October 2026.